There's more reasons than that. But, yes, that's one of the main ones.
No worries. It's a common assumption, and I wasn't bothered or offended or anything. xD The biggest thing, IMO, to realize about eating disorders is that it isn't about losing weight. Not directly, anyways.
I am, too. :3 ...I think. xD
Yeah, that's not so good either.
Though I don't necessarily believe in prayer being useful, I strongly appreciate the gesture and thought behind it. <3